1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
# Copyright (C) 2009-2017 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import logging
import time
import obnamlib
class BackupProgress(object):
def __init__(self, ts):
self.file_count = 0
self.backed_up_count = 0
self.uploaded_bytes = 0
self.scanned_bytes = 0
self.started = None
self.errors = False
self._now = time.time
self._ts = ts
self._ts['current-file'] = ''
self._ts['scanned-bytes'] = 0
self._ts['uploaded-bytes'] = 0
if self.ttystatus_supports_multiline(): # pragma: no cover
self._ts.format(
'%ElapsedTime() Backing up: '
'found %Counter(current-file) files, '
'%ByteSize(scanned-bytes); '
'uploaded: %ByteSize(uploaded-bytes)\n'
'%String(what)'
)
else: # pragma: no cover
self._ts.format(
'%ElapsedTime() '
'%Counter(current-file) '
'files '
'%ByteSize(scanned-bytes) scanned: '
'%String(what)')
def set_time_func(self, now):
self._now = now
def ttystatus_supports_multiline(self):
return hasattr(self._ts, 'start_new_line')
def clear(self): # pragma: no cover
self._ts.clear()
def finish(self): # pragma: no cover
self._ts.finish()
def error(self, msg, exc=None):
self.errors = True
logging.error(msg, exc_info=exc)
self._ts.error('ERROR: %s' % msg)
def what(self, what_what):
if self.started is None:
self.started = self._now()
self._ts['what'] = what_what
self._ts.flush()
def update_progress(self): # pragma: no cover
self._ts['not-shown'] = 'not shown'
def update_progress_with_file(self, filename, metadata):
self._ts['what'] = filename
self._ts['current-file'] = filename
self.file_count += 1
def update_progress_with_scanned(self, amount):
self.scanned_bytes += amount
self._ts['scanned-bytes'] = self.scanned_bytes
def update_progress_with_upload(self, amount):
self.uploaded_bytes += amount
self._ts['uploaded-bytes'] = self.uploaded_bytes
def update_progress_with_removed_checkpoint(self, gen): # pragma: no cover
self._ts['checkpoint'] = gen
def compute_report(self, fs):
duration = self._now() - self.started
overhead = fs.bytes_written + fs.bytes_read - self.uploaded_bytes
speed = self.uploaded_bytes / float(duration)
return {
'duration': duration,
'file-count': self.file_count,
'backed-up-count': self.backed_up_count,
'scanned-bytes': self.scanned_bytes,
'uploaded-chunk-bytes': self.uploaded_bytes,
'uploaded-total-bytes': fs.bytes_written,
'downloaded-total-bytes': fs.bytes_read,
'overhead-total-bytes': overhead,
'effective-upload-speed': speed,
}
def report_stats(self, output, fs, quiet, report=None): # pragma: no cover
if report is None:
report = self.compute_report(fs)
duration_string = obnamlib.humanise_duration(report['duration'])
chunk_amount, chunk_unit = obnamlib.humanise_size(
report['uploaded-total-bytes'])
ul_amount, ul_unit = obnamlib.humanise_size(
report['uploaded-total-bytes'])
dl_amount, dl_unit = obnamlib.humanise_size(
report['downloaded-total-bytes'])
overhead_bytes = (
report['downloaded-total-bytes'] +
(report['uploaded-total-bytes'] - report['uploaded-total-bytes']))
overhead_bytes = max(0, overhead_bytes)
overhead_amount, overhead_unit = obnamlib.humanise_size(overhead_bytes)
if report['uploaded-total-bytes'] > 0:
overhead_percent = (
100.0 * overhead_bytes / report['uploaded-total-bytes'])
else:
overhead_percent = 0.0
speed_amount, speed_unit = obnamlib.humanise_speed(
report['uploaded-total-bytes'], report['duration'])
logging.info(
'Backup performance statistics:')
logging.info(
'* files found: %s',
report['file-count'])
logging.info(
'* files backed up: %s',
report['backed-up-count'])
logging.info(
'* uploaded chunk data: %s bytes (%s %s)',
report['uploaded-total-bytes'], chunk_amount, chunk_unit)
logging.info(
'* total uploaded data (incl. metadata): %s bytes (%s %s)',
report['uploaded-total-bytes'], ul_amount, ul_unit)
logging.info(
'* total downloaded data (incl. metadata): %s bytes (%s %s)',
report['downloaded-total-bytes'], dl_amount, dl_unit)
logging.info(
'* transfer overhead: %s bytes (%s %s)',
overhead_bytes, overhead_amount, overhead_unit)
logging.info(
'* duration: %s s (%s)',
report['duration'], duration_string)
logging.info(
'* average speed: %s %s',
speed_amount, speed_unit)
scanned_amount, scanned_unit = obnamlib.humanise_size(
report['scanned-bytes'])
if not quiet:
output.write(
'Backed up %d files (of %d found), containing %.1f %s.\n' %
(report['backed-up-count'],
report['file-count'],
scanned_amount,
scanned_unit))
output.write(
'Uploaded %.1f %s file data in %s at %.1f %s '
'average speed.\n' %
(chunk_amount,
chunk_unit,
duration_string,
speed_amount,
speed_unit))
output.write(
'Total download amount %.1f %s.\n' %
(dl_amount,
dl_unit))
output.write(
'Total upload amount %.1f %s. '
'Overhead was %.1f %s (%.1f %%).\n' %
(ul_amount,
ul_unit,
overhead_amount,
overhead_unit,
overhead_percent))
|
